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. Author manuscript; available in PMC: 2013 Nov 1.
Published in final edited form as: Vet Clin North Am Small Anim Pract. 2012 Oct 9;42(6):1179–1207. doi: 10.1016/j.cvsm.2012.08.008

Figure 6.

Figure 6

Receptor innervation by ganglion cells. (Top) drawing that illustrates the segregated innervation of hair cells by the two types of spiral ganglion cells. Type II neurons represent only 5–10% of the population and innervate multiple outer hair cells. In contrast, type I neurons represent the remaining 90–95% and innervate exclusively inner hair cells. Each IHC is innervated by 10–20 ganglion cells. (Bottom) photomicrograph of representative type I and type II ganglion cells as stained by horseradish peroxidase [100] (Kiang, NY-S, Morest, DK, Godfrey, DA, et al. Stimulus coding at caudal levels of the cat's auditory nervous system. I. Response characteristics of single units. In: Basic Mechanisms of Hearing. AR Moller, eds. New York: Academic Press; 1973. pp. 455–478.)